Thermal shield turbine airfoil
First Claim
Patent Images
1. A gas turbine airfoil comprising:
- opposite pressure and suction sides joined together at chordally spaced apart leading and trailing edges and extending longitudinally from root to tip;
an outwardly convex nose bridge bridging said pressure and suction sides behind said leading edge, and integrally joined to a complementary thermally insulating shield spaced therefrom to define a bridge channel therebetween;
said shield includes said leading edge and wraps laterally aft around said nose bridge along both said pressure and suction sides; and
a plurality of flow channels disposed behind said nose bridge for cooling said airfoil to said trailing edge.
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Abstract
A turbine airfoil includes opposite pressure and suction sides joined together at leading and trailing edges. An outwardly convex nose bridge bridges the pressure and suction sides behind the leading edge, and is integrally joined to a complementary thermally insulating shield spaced therefrom to define a bridge channel. The shield includes the leading edge and wraps laterally aft around the nose bridge along both the pressure and suction sides.
39 Citations
22 Claims
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1. A gas turbine airfoil comprising:
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opposite pressure and suction sides joined together at chordally spaced apart leading and trailing edges and extending longitudinally from root to tip;
an outwardly convex nose bridge bridging said pressure and suction sides behind said leading edge, and integrally joined to a complementary thermally insulating shield spaced therefrom to define a bridge channel therebetween;
said shield includes said leading edge and wraps laterally aft around said nose bridge along both said pressure and suction sides; and
a plurality of flow channels disposed behind said nose bridge for cooling said airfoil to said trailing edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gas turbine airfoil 12 comprising:
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opposite pressure and suction sides joined together at chordally spaced apart leading and trailing edges and extending longitudinally from root to tip;
an outwardly convex nose bridge bridging said pressure and suction sides behind said leading edge, and integrally joined to a complementary thermally insulating shield spaced therefrom to define a bridge channel therebetween; and
said shield includes said leading edge and wraps laterally aft around said nose bridge along both said pressure and suction sides. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification